CN116576412A - Headlight device for vehicle - Google Patents

Headlight device for vehicle Download PDF

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Publication number
CN116576412A
CN116576412A CN202310054997.8A CN202310054997A CN116576412A CN 116576412 A CN116576412 A CN 116576412A CN 202310054997 A CN202310054997 A CN 202310054997A CN 116576412 A CN116576412 A CN 116576412A
Authority
CN
China
Prior art keywords
irradiation
light
pattern
vehicle
pedestrian
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310054997.8A
Other languages
Chinese (zh)
Inventor
田古里真嘉
槌谷裕志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of CN116576412A publication Critical patent/CN116576412A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • B60Q1/1415—Dimming circuits
    • B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
    • B60Q1/143—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic combined with another condition, e.g. using vehicle recognition from camera images or activation of wipers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/62—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution for adaptation between right-hand and left-hand traffic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • F21S41/692—Shields, i.e. screens not creating an image meant to be projected
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F21V23/0471—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor detecting the proximity, the presence or the movement of an object or a person
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/105—Controlling the light source in response to determined parameters
    • H05B47/115—Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/165—Controlling the light source following a pre-assigned programmed sequence; Logic control [LC]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/05—Special features for controlling or switching of the light beam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/40—Indexing codes relating to other road users or special conditions
    • B60Q2300/45—Special conditions, e.g. pedestrians, road signs or potential dangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/20—Direction indicator lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The invention provides a headlight device for a vehicle, which can improve the visibility of a driver to a pedestrian even under severe conditions such as night or night and rainy days. In order to solve the above-described problems, the present invention provides a vehicle headlamp apparatus including: a left light irradiation unit provided on the left side of the vehicle, for irradiating light to a specific light distribution area in the vehicle in a first irradiation pattern in which light areas and dark areas are alternately repeated; and a right-side light irradiation unit provided on the right side of the vehicle, for irradiating light to the light distribution region in a second irradiation pattern in which light regions and dark regions are alternately repeated. In one aspect, the first illumination pattern and the second illumination pattern are the same illumination pattern. In another aspect, the first illumination pattern is an illumination pattern in which first open areas are arranged in parallel, and the second illumination pattern is an illumination pattern in which second open areas intersecting the first open areas are arranged in parallel.

Description

Headlight device for vehicle
Technical Field
The present invention relates to a vehicle headlamp apparatus.
Background
As a vehicle headlamp apparatus, there is proposed an apparatus that prevents a pedestrian from blinding and allows a driver to visually recognize the pedestrian well (for example, refer to patent document 1). In the vehicle headlamp device of patent document 1, the amount of illumination on the upper body of the pedestrian is reduced based on the distance from the pedestrian obtained by the pedestrian detection sensor.
[ Prior Art literature ]
(patent literature)
Patent document 1: japanese patent laid-open No. 2013-184614
Disclosure of Invention
[ problem to be solved by the invention ]
However, accidents caused by a pedestrian who is missing from the front of the vehicle when looking on a straight road tend to increase. Such a leakage of the pedestrian's eyes must be avoided, but the current vehicle headlamp apparatus cannot sufficiently solve such a problem particularly in severe conditions such as at night or at night and in rainy days.
The present invention has been made in view of the above-described situation, and an object thereof is to provide a vehicle headlamp apparatus capable of improving the visibility of a driver to a pedestrian even in severe conditions such as nighttime, nighttime and rainy days.
[ means of solving the problems ]
(1) A vehicular headlamp apparatus (for example, a vehicular headlamp apparatus 1 described later) includes: a left light irradiation unit (for example, a left pattern irradiation lamp 4L as a left light irradiation unit described later) provided on the left side of the vehicle (for example, a vehicle 2 described later) and configured to irradiate light to a specific light distribution region (for example, a light distribution region 16 described later) in the vehicle in a first irradiation pattern in which an bright region (for example, an bright region a1 described later) and a dark region (for example, a dark region a2 described later) are alternately repeated; and a right-side light irradiation unit (for example, a right-side pattern irradiation lamp 4R as a right-side light irradiation unit described later) provided on the right side of the vehicle and configured to irradiate light to the light distribution region in a second irradiation pattern in which light regions and dark regions are alternately repeated.
(2) The vehicle headlamp device according to (1), wherein the first irradiation pattern and the second irradiation pattern are the same irradiation pattern (for example, an irradiation pattern Pf described later).
(3) The vehicle headlamp device according to (1), wherein the first irradiation pattern (for example, a first irradiation pattern Pf1 described later) is an irradiation pattern in which first bright regions (for example, a first bright region a11 described later) are arranged in parallel, and the second irradiation pattern (for example, a second irradiation pattern Pf2 described later) is an irradiation pattern in which second bright regions (for example, a second bright region a12 described later) intersecting the first bright regions are arranged in parallel.
(effects of the invention)
In the vehicle headlamp apparatus according to (1), the bright-dark pattern, in which the bright portion and the dark portion are alternately repeated, is moved within the outline of the moving pedestrian by at least one of the irradiation light of the first irradiation pattern from the left-side light irradiation portion and the irradiation light of the second irradiation pattern from the right-side light irradiation portion. Thus, the presence of the moving pedestrian can be easily recognized by the driver. Even in severe conditions such as nighttime, nighttime and rainy days, the leakage of the driver's vision to pedestrians can be improved.
In the vehicle headlamp apparatus according to (2), the first irradiation pattern and the second irradiation pattern are the same irradiation pattern. Therefore, the phase difference at the position of the pedestrian corresponding to the interval of the emission positions of the irradiation light from the left-side light irradiation section and the irradiation light from the right-side light irradiation section can be clearly recognized without generating errors caused by different irradiation patterns. Thus, the bright and dark patterns alternately repeated in the bright and dark portions can be clearly seen to move within the outline of the moving pedestrian. Thus, the presence of the moving pedestrian can be recognized by the driver more reliably.
In the vehicle headlamp apparatus of (3), the first irradiation pattern is an irradiation pattern in which the first bright areas are arranged in parallel, and the second irradiation pattern is an irradiation pattern in which the second bright areas intersecting the first bright areas are arranged in parallel. Therefore, it is possible to clearly recognize the phase difference at the position of the pedestrian corresponding to the interval of the emission positions of the irradiation light of the first irradiation pattern from the left-side light irradiation section and the irradiation light of the second irradiation pattern from the right-side light irradiation section, without occurrence of a case where one of the irradiation patterns is erroneously generated by the other irradiation pattern. Thus, the bright and dark patterns alternately repeated in the bright and dark portions can be clearly seen to move within the outline of the moving pedestrian. Thus, the presence of the moving pedestrian can be recognized by the driver more reliably.
Drawings
Fig. 1 is a schematic view showing a vehicle headlamp apparatus according to an embodiment of the present invention.
Fig. 2 is a conceptual configuration diagram of a pattern irradiation lamp in the vehicular headlamp apparatus of fig. 1.
Fig. 3 is a diagram schematically showing visual characteristics of a person according to the technical idea of the present invention.
Fig. 4 is a schematic diagram showing a light distribution region in a vehicle headlamp apparatus according to an embodiment of the present invention in a plan view.
Fig. 5 is a schematic diagram showing a situation of a night driving view in a vehicle having a vehicle headlamp apparatus as an embodiment of the present invention.
Fig. 6 is a schematic diagram showing a situation of a night driving view in a vehicle having a vehicle headlamp apparatus as another embodiment of the present invention.
Fig. 7 is a diagram showing a case where a moving pedestrian is irradiated with irradiation pattern light as a vehicle headlamp apparatus according to an embodiment of the present invention.
Fig. 8 is a view showing a situation in which a pedestrian moving toward a lane is irradiated with irradiation pattern light of a vehicle headlamp apparatus not according to the present invention from the viewpoint of the driver.
Fig. 9 is a diagram illustrating the cause of the phenomenon as in fig. 8.
Detailed Description
An embodiment of the present invention will be described below with reference to the drawings. In the following description, the light distribution region refers to an irradiation region of light, and the irradiation pattern refers to an irradiation pattern of light in the light region.
Fig. 1 is a schematic view showing a vehicle headlamp apparatus 1 according to an embodiment of the present invention. The vehicle headlamp apparatus 1 is disposed on the left and right sides, respectively, so as to be laterally symmetrical when viewed from the vehicle width direction center position of the vehicle 2. The vehicle headlamp apparatus 1 is provided with a turn signal lamp 3, a pattern irradiation lamp 4, a low beam (low beam) lamp 5, and a high beam lamp 6 in this order from the outside toward the inside in the vehicle width direction. The pattern irradiation lamp 4 is a generic term for the left pattern irradiation lamp 4L as the left light irradiation unit and the right pattern irradiation lamp 4R as the right light irradiation unit.
The turn signal light fixture 3 is a conventional light fixture of this kind. The pattern irradiation lamp 4 irradiates the light distribution region of the vehicle with an irradiation pattern in which light regions and dark regions are alternately repeated. The low beam lamp 5 irradiates light to a low beam specific light distribution region. The high beam lamp 6 irradiates light to a high beam specific light distribution region. The vehicle 2 having the vehicle headlamp apparatus 1 is hereinafter appropriately referred to as the host vehicle 2.
Fig. 2 is a conceptual configuration diagram of the pattern irradiation lamp 4 in the vehicle headlamp apparatus of fig. 1. The pattern irradiation lamp 4 has a left pattern irradiation lamp 4L as a left light irradiation part and a right pattern irradiation lamp 4R as a right light irradiation part. The left pattern irradiation lamp 4L includes a light emitting element driving circuit 411, a surface light emitting element 412, a light shielding mask 413, and a projection optical system 414. The right pattern irradiation lamp 4R includes a light emitting element driving circuit 421, a surface light emitting element 422, a light shielding mask 423, and a projection optical system 424. The light shielding mask 413 has light-transmitting slits corresponding to the first irradiation patterns in which the bright areas and the dark areas are alternately repeated. The light shielding mask 423 has light-transmitting slits corresponding to a second irradiation pattern in which light areas and dark areas are alternately repeated. In one embodiment of the present invention, the first irradiation pattern and the second irradiation pattern are the same irradiation pattern.
In practice, the light-emitting element driving circuit 411 and the surface light-emitting element 412 of the left pattern irradiation lamp 4L and the light-emitting element driving circuit 421 and the surface light-emitting element 422 of the right pattern irradiation lamp 4R are arranged to be separated from each other, and are connected by a wire harness. In this way, the light-emitting element driving circuit and the surface light-emitting element are insulated from each other.
The light-emitting element driving circuit 411 of the left pattern irradiation lamp 4L supplies an element driving signal Eds to the surface light-emitting element 412 in response to a start command signal Scs supplied from a lamp control electronic control unit (Electronic Control Unit, ECU) not shown. The surface light emitting element 412 emits light in response to the element driving signal Eds. By the light emission of the surface light emitting element 412, the left side irradiation light PLL of the first irradiation pattern is irradiated to the light distribution region 16 described later through the light shielding mask 413 and the projection optical system 414.
The light-emitting element driving circuit 421 of the right pattern irradiation lamp 4R supplies an element driving signal Eds to the surface light-emitting element 422 in response to a start command signal Scs supplied from a lamp control ECU, not shown. The surface light emitting element 422 emits light in response to the element driving signal Eds. By the light emission of the surface light emitting element 422, the right side irradiation light PLR of the second irradiation pattern is irradiated to the light distribution region 16 described later through the light shielding mask 423 and the projection optical system 424. Further, as described above, the first irradiation pattern and the second irradiation pattern are the same irradiation pattern.
Fig. 3 is a diagram schematically showing the visual characteristics of a person involved in the technical idea of the vehicle headlamp apparatus 1 of the present invention, which will be described later. In fig. 3, the front view 7 of the person H is divided into a central view 8 extending at a fixed acute angle from the front side to the right side, and left and right peripheral views 9 and 10 adjacent to the left and right of the central view 8, according to the visual characteristics of the person.
In general human visual characteristics, the shape of the central visual field 8 is clearly visible, but the response to the fluctuation tends to be slow. The left peripheral visual field 9 and the right peripheral visual field 10 have a shape that can be seen in a blurred manner, but have a tendency to respond quickly to changes, i.e., to have high sensitivity to changes. The vehicular headlamp apparatus 1 of the present invention is based on the idea of positively utilizing the above-described visual characteristics of a person.
Fig. 4 is a schematic diagram showing the light distribution areas 16 in the left-side pattern irradiation lamp 4L and the right-side pattern irradiation lamp 4R of the vehicle headlamp apparatus 1 according to the embodiment of the present invention in a plan view. Fig. 5 is a schematic diagram showing a situation of a night driving view in a vehicle having a vehicle headlamp apparatus as an embodiment of the present invention.
As shown in fig. 4, the left irradiation light PLL from the left pattern irradiation lamp 4L and the right irradiation light PLR from the right pattern irradiation lamp 4R project irradiation light to the light distribution region 16, and the light distribution region 16 causes the phases of the irradiation patterns to overlap and intersect in the target region 15a assumed in front of the vehicle 2. The target area 15a is set at a position where the presence of the pedestrian 15 should be reliably recognized by irradiation. A light distribution region 17 for the irradiation light from the low beam lamp 5 and the high beam lamp 6 is set in front of the vehicle 2 so as to partially overlap the light distribution region 16. Fig. 4 representatively illustrates a light distribution region 17 of the irradiation light from the low beam lamp 5 on the left side.
As shown in fig. 5, a dividing line 13 and a dividing line 14 are divided on both sides of a travel lane 12 of the own vehicle 2 on the road 11. A situation is envisaged in which the pedestrian 15 is located in the vicinity of the dividing line 13. The irradiation light of the irradiation pattern Pf, in which the bright area a1 and the dark area a2 are alternately repeated, is projected to the light distribution area 16 including the pedestrian 15. The irradiation pattern Pf is conspicuous within the outline of the pedestrian 15.
The inventors have proposed a technique for capturing the presence of a pedestrian 15 quickly by irradiating light from the vehicle headlamp apparatus 1 with an irradiation pattern in which bright areas and dark areas are alternately repeated in a stripe or lattice pattern. When light is irradiated in the irradiation pattern as described above, the light acts like light that effectively blinks, and the presence of the pedestrian 15 can be clearly recognized in the peripheral visual field (left peripheral visual field 9 in fig. 2) having high sensitivity to fluctuation in terms of the visual characteristics of the driver.
The inventors have obtained the following findings in the course of further repeated experiments: when the pedestrian 15 is moving, there is a problem in that the bright area and the dark area do not relatively change within the outline of the pedestrian 15, and it is difficult for the driver to notice the pedestrian 15. In an embodiment of the present invention, this problem is solved by projecting the irradiation light of the irradiation pattern Pf from the left-side pattern irradiation lamp 4L and the right-side pattern irradiation lamp 4R as shown in fig. 4.
That is, the irradiation light PLR from the left side pattern irradiation lamp 4L and the irradiation light PLR from the right side pattern irradiation lamp 4R project the same irradiation pattern Pf so as to intersect in the target area 15a assumed in front of the vehicle 2. The form of the irradiation pattern Pf is determined by the light shielding mask 413 in the left pattern irradiation lamp 4L and the light shielding mask 423 in the right pattern irradiation lamp 4R, but the light areas a1 and the dark areas a2 are alternately repeated.
In the above description, the case where the irradiation pattern Pf formed by the left-side pattern irradiation lamp 4L and the right-side pattern irradiation lamp 4R is the same irradiation pattern has been described, but other embodiments different from this can be adopted in the present invention.
Fig. 6 is a schematic diagram showing a situation of a night driving view in a vehicle having a vehicle headlamp apparatus as another embodiment of the present invention. In the embodiment of fig. 6, the irradiation pattern of the left irradiation light PLL from the left pattern irradiation lamp 4L is set to a stripe-shaped first irradiation pattern Pf1 in which the first light areas a11 are arranged in parallel. The irradiation pattern of the right irradiation light PLR from the right pattern irradiation lamp 4R is set to a stripe-shaped second irradiation pattern Pf2 in which the second light areas a12 are arranged in parallel. In this case, in particular, the second irradiation pattern Pf2 is an irradiation pattern intersecting the first light region a 11.
Even if the irradiation pattern is repeated alternately in the bright area and the dark area as described above, the bright area and the dark area do not relatively change within the outline of the pedestrian 15 when the pedestrian 15 is moving, and the driver hardly notices the pedestrian 15. To cope with this, first, an embodiment in which the irradiation pattern Pf formed by the left-side pattern irradiation lamp 4L and the right-side pattern irradiation lamp 4R is the same irradiation pattern will be described with reference to fig. 7 and 8.
Fig. 7 is a view showing, from the viewpoint of the driver, a situation in which the pedestrian 15 in the movement in front of the vehicle 2 is irradiated with an irradiation pattern Pf formed by the left-side pattern irradiation lamp 4L and the right-side pattern irradiation lamp 4R in the vehicle headlamp apparatus 1 according to the embodiment of the present invention. Fig. 8 shows an example of the invention. That is, the image is a view showing a situation in which the pedestrian 15 in motion is irradiated with the irradiation pattern Ps from the viewpoint of the driver by the single pattern irradiation lamp, which is either the left pattern irradiation lamp 4L or the right pattern irradiation lamp 4R.
In the case of the irradiation pattern Pf of fig. 7, the bright-dark pattern 20 formed by the bright portion 18 and the dark portion 19 fluctuates within the outline 21 of the pedestrian 15, the bright portion 18 being a portion where the pedestrian 15 in motion is brightly irradiated with light of the bright region, and the dark portion 19 being a dark portion which is not irradiated in correspondence with the dark region. Therefore, the visual stimulus on the driver side with respect to the reflected light from the pedestrian 15 is very remarkable.
The bright-dark pattern 20 fluctuates within the outline 21 of the pedestrian 15, and the bright portion 18 repeatedly passes across the eyes 22 of the pedestrian 15. Therefore, the pedestrian 15 receives the stimulus caused by the flickering of the light, and the presence of the vehicle 2 is clearly recognized. Thus, even under severe conditions such as nighttime, or nighttime and rainy days, the driver's visibility to the pedestrian 15 can be improved, and the pedestrian 15 can notice the approach of the vehicle 2 early.
On the other hand, when the moving pedestrian 15 is irradiated with the irradiation light of the irradiation pattern Ps from the single pattern irradiation lamp of fig. 8, which is not the present invention, the bright-dark pattern 20 formed by the bright portion 18 and the dark portion 19 does not change within the outline 21 of the pedestrian 15. Therefore, the visual stimulus on the driver side with respect to the reflected light from the pedestrian 15 becomes low, and the detection of the pedestrian 15 may be delayed.
In addition, the dark and light pattern 20 may not change in the outline 21 of the pedestrian 15, and the dark portion 19 may remain at the position of the eyes 22 of the pedestrian 15. Therefore, the pedestrian 15 is not stimulated by the flickering of light, and the presence of the vehicle 2 is not easily noticeable.
Fig. 9 is a diagram illustrating the cause of the phenomenon as in fig. 8. It is considered that, when the moving pedestrian 15 is irradiated with the irradiation light of the irradiation pattern Ps from the single pattern irradiation lamp as described with reference to fig. 8, the bright-dark pattern 20 formed by the bright portion 18 and the dark portion 19 does not change within the outline 21 of the pedestrian 15, and is caused by a phenomenon similar to the so-called Collision Course phenomenon. The collision route phenomenon occurs at the intersection 23 with a good view as shown in fig. 9. The vehicle 2 traveling on the road 11 toward the intersection 23 between the road 11 and the road 11a and the vehicle 2a traveling on the road 11a may collide with each other if traveling is continued.
However, since the vehicle 2a is always seen in the direction of the same angle (45 degrees in the case of fig. 9) when the vehicle 2 is viewed from the vehicle 2, an illusion of stopping is generated, which is called a collision course phenomenon. In particular, since the human peripheral vision has a characteristic that it is difficult to identify an object that is not changing, even when a collision route phenomenon occurs and the opponent vehicle stays in the peripheral vision, the existence of each other may not be recognized until entering the intersection 23.
In view of such a collision course phenomenon, it is considered that the light and dark pattern 20 of the irradiation pattern Ps from the individual pattern irradiation lamps appears similarly to the pedestrian 15 in fig. 8. That is, the bright-dark pattern 20 of the irradiation pattern Ps is relatively displaced in the same irradiation position with the movement of the vehicle 2. However, if the pedestrian 15 is moving, it is considered that the above-described relative displacement of the bright-dark pattern 20 in the contour 21 of the pedestrian 15 is synchronized with the displacement of the contour 21 itself of the pedestrian 15, and the bright-dark pattern 20 appears to stop.
In contrast, when the left irradiation light PLL from the left pattern irradiation lamp 4L and the right irradiation light PLR from the right pattern irradiation lamp 4R are projected so that the phases of the irradiation patterns overlap and intersect in the target area 15a assumed in front of the vehicle 2, the angles at which the optical axes of the left irradiation light PLL and the right irradiation light PLR are inclined in plan view are different. Therefore, either one of the left irradiation light PLL and the right irradiation light PLR is an irradiation pattern in a phase shifted from the phase in which the collision path phenomenon described above appears. Therefore, the above-described relative displacement of the bright-dark pattern 20 in the contour 21 of the pedestrian 15 can be prevented from being synchronized with the displacement of the contour 21 of the pedestrian 15 itself, and the problem described with reference to fig. 8 can be eliminated.
In particular, when the bright-dark pattern 20 of the irradiation pattern Ps of the left irradiation light PLL and the right irradiation light PLR is the same, the phase of the same bright-dark pattern 20 shifts (shift) within the outline 21 of the pedestrian 15, and therefore, the visual confirmation of the irradiation pattern Ps of any one of the left irradiation light PLL and the right irradiation light PLR is not hindered by the irradiation pattern Ps of the other one of the left irradiation light PLL and the right irradiation light PLR, but is recognized as the fluctuation of the same irradiation pattern Ps.
In contrast, in the case of another embodiment of the present invention as shown in fig. 6, the first irradiation pattern Pf1 in the left irradiation light PLL from the left pattern irradiation lamp 4L and the second irradiation pattern Pf2 in the right irradiation light PLR from the right pattern irradiation lamp 4R are different irradiation patterns, so that one cannot prevent visual confirmation of the other. That is, the first light area a11 of the first irradiation pattern Pf1 in the left irradiation light PLL and the second light area a12 of the second irradiation pattern Pf2 in the irradiation pattern of the right irradiation light PLR are stripe-shaped intersecting each other, and the optical axes of the left irradiation light PLL and the right irradiation light PLR are inclined at different angles in a plan view. Therefore, either one of the first irradiation pattern Pf1 or the second irradiation pattern Pf2 is independently observed that the phase of the same bright-dark pattern 20 is shifted within the outline 21 of the pedestrian 15.
The structure of the pattern irradiation lamp 4 in the vehicle headlamp apparatus 1 according to the embodiment of the present invention is not limited to the embodiment of fig. 2. For example, the surface light emitting element 412 is driven in accordance with the element driving signal Eds from the light emitting element driving circuit 411 of the left pattern irradiation lamp 4L, and the left irradiation light PLL of the irradiation pattern Pf is projected via the light shielding mask 413 and the projection optical system 414, but other configurations may be adopted. That is, the left pattern irradiation lamp 4L may be configured as a projector that drives a digital micromirror device (Digital Mirror Device, DMD) including a micromirror group according to a signal similar to the element drive signal Eds to project the left irradiation light PLL of the irradiation pattern Pf. The same applies to the right pattern illumination lamp 4R as in the case of applying the pattern illumination lamp 4 as a projector of the DMD.
The vehicle headlamp device 1 according to the present embodiment exhibits the following effects.
The vehicle headlamp apparatus 1 of (1) includes: a left-side pattern irradiation lamp 4L as a left-side light irradiation section provided on the left side of the vehicle 2, which irradiates light to a specific light distribution region 16 in the vehicle 2 in a first irradiation pattern in which light regions and dark regions are alternately repeated; and a right-side pattern irradiation lamp 4R as a right-side light irradiation unit provided on the right side of the vehicle, which irradiates light to the light distribution region 16 in a second irradiation pattern in which the bright region a1 and the dark region a2 are alternately repeated. Thus, the bright-dark pattern 20, in which the bright portions 18 and the dark portions 19 are alternately repeated, moves within the outline 21 of the moving pedestrian 15 by at least either the irradiation light of the first irradiation pattern from the left-side pattern irradiation lamp 4L or the irradiation light of the second irradiation pattern from the right-side pattern irradiation lamp 4R. Thus, the presence of the moving pedestrian 15 can be easily recognized by the driver. Even in severe conditions such as nighttime, nighttime and rainy days, the leakage of the driver's vision to pedestrians can be improved. In addition, for the pedestrian 15, the irradiation light may be made to enter the eye 22 so that it promptly notices the presence of the vehicle 2.
In the vehicle headlamp device 1 of (2), the first irradiation pattern and the second irradiation pattern are the same irradiation pattern Pf. Thus, the phase difference at the position of the pedestrian 15 corresponding to the interval between the emission positions of the left irradiation light PLL from the left pattern irradiation lamp 4L and the right irradiation light PLR from the right pattern irradiation lamp 4R can be clearly recognized without generating an error due to a different irradiation pattern. Thus, the bright-dark pattern 20, in which the bright portions 18 and the dark portions 19 are alternately repeated, can be clearly seen to move within the outline 21 of the moving pedestrian 15. Thus, the presence of the moving pedestrian 15 can be recognized by the driver more reliably.
In the vehicle headlamp apparatus 1 of (3), the first irradiation pattern Pf1 is an irradiation pattern in which the first bright regions a11 are arranged in parallel, and the second irradiation pattern Pf2 is an irradiation pattern in which the second bright regions a12 intersecting the first bright regions a11 are arranged in parallel. Thus, the phase difference at the position of the pedestrian 15 corresponding to the interval between the emission positions of the irradiation light of the first irradiation pattern Pf1 from the left-side pattern irradiation lamp 4L and the irradiation light of the second irradiation pattern Pf2 from the right-side pattern irradiation lamp 4R can be clearly recognized without occurrence of an error in one of the irradiation patterns due to the other irradiation pattern. Thus, the bright-dark pattern 20, in which the bright portions 18 and the dark portions 19 are alternately repeated, can be clearly seen to move within the outline 21 of the moving pedestrian 15. Thus, the presence of the moving pedestrian 15 can be recognized by the driver more reliably.
Reference numerals
a1: bright area
a11: first open area
a12: second open area
a2: dark areas
H: human body
Pf: irradiation pattern
Pf1: first irradiation pattern
Pf2: second irradiation pattern
Ps: irradiation pattern
PLL: left side irradiation light
PLR: right side irradiation light
1: headlight device for vehicle
2: vehicle with a vehicle body having a vehicle body support
3: steering signal lamp
4: pattern illuminating lamp
4L: left side pattern illuminating lamp
4R: right pattern illuminating lamp
5: dipped headlight lamp
6: high beam lamp
7: front view
8: center view
9: left peripheral view
10: right peripheral view
11. 11a: road
12: driving lane of own vehicle
13: dividing line
14: dividing line
15: walking person
15a: target area
16: light distribution area
17: light distribution area
18: ming (Ming dynasty)
19: dark portion
20: bright and dark pattern
21: contour profile
22: eyes (eyes)
23: intersection crossing
411: light-emitting element driving circuit
412: surface light-emitting element
413: shading mask
414: projection optical system
421: light-emitting element driving circuit
422: surface light-emitting element
423: shading mask
424: projection optical system

Claims (3)

1. A vehicular headlamp device comprising:
a left light irradiation unit which is provided on the left side of the vehicle and irradiates light to a specific light distribution region in the vehicle in a first irradiation pattern in which light regions and dark regions are alternately repeated; the method comprises the steps of,
and a right light irradiation unit which is provided on the right side of the vehicle and irradiates light to the light distribution region in a second irradiation pattern in which light regions and dark regions are alternately repeated.
2. The vehicle headlamp device according to claim 1, wherein the first irradiation pattern and the second irradiation pattern are the same irradiation pattern.
3. The vehicle headlamp device according to claim 1, wherein the first irradiation pattern is an irradiation pattern in which first bright areas are arranged in parallel, and the second irradiation pattern is an irradiation pattern in which second bright areas intersecting the first bright areas are arranged in parallel.
CN202310054997.8A 2022-02-08 2023-02-03 Headlight device for vehicle Pending CN116576412A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-018311 2022-02-08
JP2022018311A JP2023115848A (en) 2022-02-08 2022-02-08 Vehicular headlight device

Publications (1)

Publication Number Publication Date
CN116576412A true CN116576412A (en) 2023-08-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310054997.8A Pending CN116576412A (en) 2022-02-08 2023-02-03 Headlight device for vehicle

Country Status (3)

Country Link
US (1) US20230249605A1 (en)
JP (1) JP2023115848A (en)
CN (1) CN116576412A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5706196B2 (en) * 2011-03-03 2015-04-22 スタンレー電気株式会社 Vehicle lighting device

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US20230249605A1 (en) 2023-08-10

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